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Estilos de vida saludables de los estudiantes de la Corporación Universitaria Lasallista. Agosto 2004
(Corporación Universitaria Lasallista, 2004) Rodríguez Gázquez, María de los Ángeles; Castañeda Gallego, Alba Doris; Correa Vargas, Lía Rosa; Sarabia Londoño, Mauricio
Introduction: Heart diseases are a frequent cause of illness and death in our country. There is enough scientific evidence that shows that healthy life styles prevent the appearing of those diseases. Objective: To establish the frequency of exposition to risky factors concerning heart diseases for Corporación Universitaria Lasallista´s students, aiming to acquire information that helps in the development of strategies for avoiding those factors. Materials and methods: A descriptive study was made, using a self-applied survey to get the information. After criticizing the collected data, a data base in the SPSS vr. 11.00 software was created, and this was also used to process the information. In the analysis for hypothetical proofs, these were contrasted with the X2 test when prevalences were compared, and with the t student t´test when the comparison of media rates was made. The statistic significance was assumed when the probability value was les than 0.05. Results: A considerable proportion of the students have inadequate life styles, and this means procrastinated risks for heart disease. Some conducts were particularly worrying, as the total lack of exercise (48%), smoking (36%) and weight increase (overweight 9.5% and obesity 0.5%). The data showed that women have better protective behaviors than men, concerning heart diseases. Conclusion: Corporación Universitaria Lasallista´s students have a considerable measurement of exposition to risky factors concerning heart diseases, through their life styles. Therefore, the adoption of strategies to create healthier life styles among them, is recommended.
Porquinaza en la alimentación animal
(Corporación Universitaria Lasallista, 2004) Castrillón Quintana, Olivia; Jiménez Pérez, Ricardo Andrés; Bedoya Mejía, Oswaldo
In the whole world, the biggest problems faced by pig breeders is the generation of feces, which having a great potential of nutrients, contaminate the environment and can become the main obstacle for the future of the animal industry. Pig feces have been handled traditionally under a pigs-lawn-milk system, using the soil improvement for lawn with the fertilization of organic material, obtaining a better dairy production. To use the contents of the nutrients contained specially by pig’s manure, an alternative can be the conversion to unicellular protein, in a solid state fermentation process with microorganisms.
Mesofauna de los colémbolos en el compost de la Corporación Universitaria Lasallista
(Corporación Universitaria Lasallista, 2004) Arango Gutiérrez, Gloria Patricia; Macías Mazo, Karina Isabel
Samples were taken by using the falling traps method, putting three traps in each composter at a 20-30 cm depth from the surface. The collection of collembolas was done three times a week, during three months, in 2003. The collected organisms were duly cured, to be taxonomically identified afterwards.
Evaluación de la fotodegradación sensibilizada con TiO2 Y Fe3+ para aguas coloreadas
(Corporación Universitaria Lasallista, 2004) Garcés Giraldo, Luís Fernando; Rodríguez Restrepo, Alejandra
The necessity of keeping the environment in a good shape, has taken us to look for efficient methods to eliminate chemical compounds, produced by several human activities, which contaminate it. Water pollution is very important, because contaminants can accumulate and be transported by brooks, rives, lakes, dams and underground water sources, affecting life forms around them and the health of humans. The most important contamination sources of ground level and underground water sources are waste waters from domestic and industrial origins. Photocatalytical technologies are very promising t be applied in our country, because the use of sun energy reduces, in a very high measure, the cost. Photocatalytical reactors are easy to use, use sun energy and the radiation of ultraviolet lamps. Besides, they are very easy to be adapted for a great variety of aplications.
El desarrollo en Colombia: historia de una hegemonía discursiva
(Corporación Universitaria Laslallista, 2004) Restrepo Velásquez, Juan Carlos
Introduction: The following text is a part of the finds of the research “EXPLORATORY ANALYSIS OF THE CONCEPT OF DEVELOPMENT INCLUDED IN THE COLOMBIAN DEVELOPMENT PLANS. CONTINUITIES AND FRACTURES. PERIOD 1950-2000”,which tries to establish, theoretically and from an exploratory analysis line, the historical practice of the concept of development in Colombia, according to the concept of development that appears in its National Development Plans and in similar documents during the second half of the XX Century. This research produced three finds: First, the constant conception of economical growth as the only idea of development. Second, evident fractures and discontinuities in the development speech, due to the imperant focuses about the topic and, third, the foreign speech practices in Colombia’s development. This latter find is the one presented with the title: COLOMBIAN DEVELOPMENT: HISTORY OF A HEGEMONICAL SPEECH. Materials and Methods: This research work is theoretical and is made under qualitative research parameters, allowing us to establish a scientific method to have an adequate approach to the research object and interact with it. The approach of this research is established by following the route offered by the documental and historical research method in the multicyclical framework of qualitative research. In this route, hermeneutics (attained to the hermeneuticalhistorical method) was the focus used to approach the interpretation of texts and the appropriate contexts, with the analysis of contents´ method. By the use of analysis matrixes, common elements are inferred and those, from the exploration we are making, have been called finds. They are duly documented and evidenced afterwards. Results and Main Conclusions: From the speeches used for the national development plans, effects of truth and reality have been created, and this fact has implied a control of the used words that, at the end of the day, is the one that produces the hegemonical speech in this case. This sort of speeches have been consolidated from the profesionalization of development and its raising to an institutional level.
Detoxificación de banano verde
(Corporación Universitaria Lasallista, 2004) Garcés Molina, Adelaida María
Colombia produces big quantities of banana to export, but a quantity rated between 10% and 20% is rejected because it does not fulfill the required quality standards. Those rejected bananas can not be used to feed animals, because they are containing tannins, which are anti-nutritional substances, and then those bananas get rotten in the farms, causing environmental problems and economical loses for the producers. An alternative for the use of green bananas as animal food is the reduction of their tannin contents by the use of solid-state fermentation, a very advantageous procedure under economical and process efficiency terms.
La biofiltración, una alternativa para la potabilización del agua
(Corporación Universitaria Lasallista, 2004) Arango Ruiz, Álvaro de Jesús
In current times, the population from developing countries is experiencing a lack of basic sanitary conditions, including the potable water to satisfy their needs. The lack of water potabilization is associated to illness and death among children because of hydric origin diseases. The lack of water available and properly treated for human use, brings the need to get interested on innovative projects in this field, as biofiltration, introducing efficient treatment, potabilization and distribution alternatives which must be easy to be reached and economically viable for the people.
Sinergia entre edulcorantes no calóricos y el ácido fumárico
(Corporación Universitaria Lasallista, 2004) Restrepo Gallego, Mauricio
Given the great demand of sugar-free products it is necessary to find new applications for traditional products and additives. This is the case of the fumaric acid, for which a sweetener or sweeteners mixture that grants a good level of synergy in products like powder beverages is being searched. The current investigations suggest that the encapsulation process is the best alternative to achieve a good balance between acidulants and sweeteners, taking advantage of their physicochemical and sensorial qualities.
Sobre un arte literario único en las supuestas “fábulas” de Leonardo da Vinci (la unión entre ciencia, amor y arte)
(Corporación Universitaria Lasallista, 2004) Naranjo Boza, Nicolás
The text deals with the models that inspired Leonardo to make his notes (whether scientific or not). There is a study of his scientific writing which for 500 years has been a paradigm. The article exemplifies that to write well with a scientific approach the world around us must be observed and that language itself must be studied thoroughly. It briefly deals with the diverse writing styles that Leonardo explored. There is a discussion about the so-called “literary fables” actually being fables in the classical sense of the term and rather being scientific notes.
De las interacciones múltiples a la reconfiguración del sujeto comunicativo
(Corporación Universitaria Lasallista, 2004) Ramírez Cortés, Juan Pablo
The process of constructing messages and giving them logical senses in the context of the virtuality and electronic media requires, at least, an initial theoretical reflection. Cybermedia became, in a very short time, novel alternatives with enough appealing power to fulfill the imagination and the informative desires of a new generation of people, whose basic characteristics are the level of response and their pressure on the traditional mass media. To act consequently and to preserve the professionalism of the communication in new cybermedia environments are the task proposed in this document.
La fotocatálisis como alternativa para el tratamiento de aguas residuales
(Corporación Universitaria Lasallista, 2004) Garcés Giraldo, Luís Fernando; Mejía Franco, Edwin Alejandro; Santamaría Arango, Jorge Julián
To minimize the impacts caused by industries in water sources, the advanced oxidation processes (POA in Spanish) have been established as a technologically possible and really new alternative to treat the liquid waste produced by those industries. The POA are, basically, forms of hydroxyls radicals highly oxidative, and they contribute to the total mineralization of the contaminant compounds contained in industrial liquids wastes. Among the most used processes we have photo catalysis, which is an acceleration of a photo reaction by the use of a catalyzer. In this article we make a review of the POA, focusing on the photo oxidation processes.
Sistemas de levante en crías de vacuno
(Corporación Universitaria Lasallista, 2004) Agudelo Gómez, Divier Antonio; Ochoa Doria, Oscar Pedro; Puerta Rico, Luís Fernando; Pineda Sánchez, David
In the farms dedicated to milk production, the bovine nursery is fundamental because it is the future of the dairy industry. All of the physiological and digestive aspects of the calves to fulfill their nutritional requirements and promote a fast development of the rumen-reticule complex. There are several breeding systems that can be implemented, from the simplest ones, in which the producer does not have specialized facilities, to the breeding of each animal in an individual corral. Each system has disadvantages and advantages from all of the technical and economical approaches. The quantity of milk provided to the suckling bovines depends on the implemented system and the programs in each farm. Preventive sanitation in any case is imprescindible to guarantee the best growth of the animals.
Satisfacción de los profesores con los servicios bibliotecarios de la Corporación Universitaria Lasallista, agosto de 2003
(Corporación universitaria Lasallista, 2004) Rodríguez Gázquez, María de los Ángeles; Uribe Londoño, Luz María
Introduction:User’s satisfaction is an indicative of the quality of the library’s services, evaluated from the perspective of Faculty members as customers of same service. Objetive: To describe the satisfaction level of the Faculty members with the services provided by the library. Materials and Methods: A descriptive study was made, using as an instrument to acquire the information a self-applied questionnaire. The satisfaction with the library services was evaluated through a 60 items scale, graded from 1 to 5, giving a 1 grade to total discomfort and 5 to a maximum satisfaction. The information was put in a data base made with a SPSS vr. 11.5 statistic software, with which the tabulation plan was made. Results: A total of 70 faculty members were surveyed. During last semester, three out of five of them used the library services one or more times per week, considering this as an appropriate frequency of use. The general satisfaction with this service was graded with a 4.0. According to the faculty’s opinion, the information resources offered by the library are enough, although they suggest an increase in the quantity and quality of books and journals. Conclusion: There is an adequate satisfaction of the Corporación Universitaria Lasallista´s faculty members with the services provided by its library.
Valor biológico de las cucarachas en el compost
(Corporación Universitaria Lasallista, 2004) Arango Gutiérrez, Gloria Patricia; Agudelo Betancur, Lina Marcela
Between the fauna living in the compost, the insects play an important role in the transformation processes of the organic material, due to these help in between other functions, to triturate the vegetable material for others to perform transformation processes. For the crockrach, the compost is a proper environment to have a supervivency and reproduction process, besides of the contribution in the transformation processes of the organic materia in fertilize.
Mesofauna de las hormigas en el compost de la Corporación Universitaria Lasallista
(Corporación Universitaria Lasallista, 2004) Arango Gutiérrez, Gloria Patricia; Piedrahita Vera, Lina María
Introduction: The organisms that belong to Formicidae family are biologically and ecologically important in the vegetal material´s decomposition process generated in the Corporación Universitaria Lasallista, in Caldas, Antioquia, Colombia. Objective: By a taxonomic identification of each collected species, we aimed to determine and evaluate all of the different functions and behaviors they perform in the transformation of compost, in order to use the information as a parameter to establish an optimum quality and production standard for that compost. Materials and Methods: The organism’s samples were obtained by the falling traps method. This collection process was made during the months of March, April and May of 2003. They were cured and later identified by using the Serna´s and Vergara´s taxonomy keys. Results: Five sub-families of ants were found in the Corporación Universitaria Lasallista´s composters: ECITONINAE, PONERINAE, MYRMICINAE and FORMICIDAE.Conclussion: A big number of ant species were found, probably due to the high presence of other insects which are a food source for ants that usually hunt other kinds of arthropods.
La lluvia ácida: un fenómeno fisicoquímico de ocurrencia local
(Corporación Universitaria Lasallista, 2004) Garcés Giraldo, Luís Fernando; Hernández Ángel, Marta Lucía
Acid rain is a phenomena associated to high production, depending mainly of fossilized fuel consuming and of certain agro cultural practices as burnings, which release several substances like sulphur and nitrogen oxides to the atmosphere, aporting the raw material to make up the sulphuric and nitric acids which later return to the hearth surface as liquids as sprays and affect the natural ecosystems. Rain water is slightly acid because it contains carbonic acid, formed from the atmospheric carbonic dioxide. Rain, which usually has a pH of approximately 5.6, can reach a measure close to 7.0, due to the presence of other alkaline substances in the atmosphere, and those substances neutralize the carbonic acid.
Extracción de taninos presentes en el banano verde
(Corporación Universitaria Lasallista, 2004) Velásquez Valderrama, Ángela María
Introduction: Green rejected bananas are a remain from harvests, they contain high quantities of tannins and polyphenols and low contents of fibers and proteins. Tannins are antinutritional substances, and that is why they do not allow the use of rejected green bananas (“boleja”) in animal feeding, as an energy source. The selective extraction with solvents is a route of separation to obtain tannins. The results shown in this work are an evidence that this separation method is effective to remove tannins from the “boleja”. Objective: Extract the tannins from rejected green bananas (“boleja”) using the extraction with solvents. Materials and methods: The obtaining of alcoholic and watery extracts and their qualitative evaluation was made by combining different extraction and qualitative tannin´s determination procedures, thoroughly shown in the chemical and instrumental analysis literature. The quantitative tannin´s analysis was made by colorimetric methods, using a UV/VIS spectrophotometer in which the samples were read at 700 mn and referred to tannic acid. As a reference substance tannic acid from the Merck brand was used. To measure the absorbing rate a UV-VIS SPECTRONIC-20 spectrophotometer was used. Results: the lineal correlation coefficients calculated for the calibration curves were: From tannic acid: 0.9983, from sample A –alcoholic extract: 0.9977, from sample A –watery extract: 0.9822, from sample B: -Alcoholic extract: 0.9999 and from sample B watery extract: 0.9938. Conclusion: The extraction of tannins from rejected green bananas (“boleja”) with a 1:1 methanol-water solution is more efficient and effective than tannin´s extraction with water.
Los residuos sólidos municipales como acondicionadores de suelos
(Corporación Universitaria Lasallista, 2004) Puerta Echeverri, Silvia María
The compostation made from organic remains produced by municipals, can be a liability and cause damage when used as soil conditioners, because of the excess of inert materials, stinking emissions, high salinity levels, toxicity due to organic contaminants or heavy metals, immaturity of the process and the presence of pathogenic organisms. Given all this factors, it is necessary to evaluate all of the physical, chemical and microbiological parameters of the process, keeping in mind the corresponding Colombian laws on the subject, which regulates the organic materials used as fertilizers and soil conditioners in Colombia: Colombian Technical norm 5167 and the resolution 00150 of January 21st of 2003, made by the Colombian Agro-Cultural Institute, ICA.
Arequipe con fruta, alternativa agroindustrial para aumentar valor agregado
(Corporación Universitaria Lasallista, 2004) Cortés Arango, Astrid Lorena; Ortega Arellano, Lucila María
A research was made taking advantage of the high acceptation consumers have of the traditional product known as arequipe, and an added value was given to it by the addition of natural fruit’s fruits flavor. Our aim was to develop a new product with the desired characteristics of taste, odor and color which are the appropriate for each fruit, without affecting some of the organoleptic properties of the arequipe, such as its soft texture and its mellow consistence, which allows it to be softly sproden on other foods.
Fotodegradación con TiO2 del colorante Rojo Amaranto en aguas
(Corporación Universitaria Lasallista, 2004) Garcés Giraldo, Luís Fernando; Mejía Franco, Edwin Alejandro; Peñuela Mesa, Gustavo Antonio
Introduction: Sensitivized biodegradation, with TiO2 and sun light, is a technique which can be used as a depuration system by itself, or as a tertiary process, especially for industrial remains treatment. Photocatalytical technologies are very promising for their application on the solving of water contamination problems. Those technologies are very well regarded to be implemented, because the use of sun light reduces in a great measure the costs of the treatment. The use of this technique to degrade and mineralize the Amaranth Red Dye, can be implemented as a more appropriate alternative than other traditional oxidation processes. Objective: To study heterogeneous catalysis of Amaranth Red dye, by the use of a sun light collector and titanium oxide as a catalyst. Materials and methods: For the photocatalysis process, a composed cylinder parabolic sunlight collector (CPC) was used and the conditions under which the higher measurements of color removal were gotten were analyzed. The variables analyzed for this purpose were the concentration of the catalyst (TiO2), the hydrogen peroxide concentration and the relation between both of them before the degradation and mineralization of the color. Results:For this work synthetic solutions dyed with 100mg/L Amaranth Red color prepared with potable water. The most influent parameter on the degradation percentages reached, is the use of TiO2 mixed with hydrogen peroxide. The maximum degradation percentage obtained was 93.48% for titanium dioxide concentration of 150mg/L and 2 ml/L of hydrogen peroxide. Conclussion: The used of appropriate concentrations of TiO2 and H2O2 allows to obtain good degradation and mineralization percentages of the Amaranth Red Dye contained in water.

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